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package fish.payara.microprofile.faulttolerance;

import jakarta.enterprise.context.control.RequestContextController;
import jakarta.interceptor.InvocationContext;

import fish.payara.microprofile.faulttolerance.policy.FaultTolerancePolicy;
import fish.payara.microprofile.faulttolerance.service.Stereotypes;

/**
 * Essentially a list of all methods needed to process FT behaviour.
 * 
 * Decouples the FT processing facilities and state from any specific implementation to allow e.g. unit testing.
 *
 * @author Jan Bernitt
 */
public interface FaultToleranceService {

    /**
     * Creates an instance of a {@link FaultToleranceConfig} bound to the given {@link InvocationContext} and
     * {@link Stereotypes} lookup.
     * 
     * @param context     currently processed context
     * @param stereotypes way to lookup sterotype annotations
     * @return a thread safe {@link FaultToleranceConfig} instance bound to the given context
     */
    FaultToleranceConfig getConfig(InvocationContext context, Stereotypes stereotypes);

    /**
     * Get or create the context object for processing the annotated method represented by the given
     * {@link InvocationContext}.
     * 
     * @param context represents the FT annotated method being called
     * @param policy  the policy being used for this execution
     * @param requestContextController the controller to use or null
     * @return the {@link FaultToleranceMethodContext} to use to process the method invocation with FT semantics. This
     *         is a context specific to the target object and called method.
     */
    FaultToleranceMethodContext getMethodContext(InvocationContext context, FaultTolerancePolicy policy,
            RequestContextController requestContextController);

    default FaultToleranceMethodContext getMethodContext(InvocationContext context, FaultTolerancePolicy policy) {
        return getMethodContext(context, policy, null);
    }
}
